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name="MSearchResults" id="MSearchResults"> +</iframe> +</div> + +<div class="header"> + <div class="summary"> +<a href="#pub-attribs">Data Fields</a> </div> + <div class="headertitle"> +<div class="title">arm_cfft_radix4_instance_f32 Struct Reference</div> </div> +</div><!--header--> +<div class="contents"> + +<p>Instance structure for the floating-point CFFT/CIFFT function. + <a href="structarm__cfft__radix4__instance__f32.html#details">More...</a></p> +<table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a> +Data Fields</h2></td></tr> +<tr class="memitem:a7e6a6d290ce158ce9a15a45e364b021a"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">fftLen</a></td></tr> +<tr class="separator:a7e6a6d290ce158ce9a15a45e364b021a"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a25d1da64dd6487c291f04d226f9acc66"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a25d1da64dd6487c291f04d226f9acc66">ifftFlag</a></td></tr> +<tr class="separator:a25d1da64dd6487c291f04d226f9acc66"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ac10927a1620195a88649ce63dab66120"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#ac10927a1620195a88649ce63dab66120">bitReverseFlag</a></td></tr> +<tr class="separator:ac10927a1620195a88649ce63dab66120"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a14860c7544911702ca1fa0bf78204ef3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a14860c7544911702ca1fa0bf78204ef3">pTwiddle</a></td></tr> +<tr class="separator:a14860c7544911702ca1fa0bf78204ef3"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:a8da0d2ca69749fde8cbb95caeac6fe6a"><td class="memItemLeft" align="right" valign="top">uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a8da0d2ca69749fde8cbb95caeac6fe6a">pBitRevTable</a></td></tr> +<tr class="separator:a8da0d2ca69749fde8cbb95caeac6fe6a"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:abe31ea2157dfa233e389cdfd3b9993ee"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#abe31ea2157dfa233e389cdfd3b9993ee">twidCoefModifier</a></td></tr> +<tr class="separator:abe31ea2157dfa233e389cdfd3b9993ee"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:acc8cb18a8b901b8321ab9d86491e41a3"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#acc8cb18a8b901b8321ab9d86491e41a3">bitRevFactor</a></td></tr> +<tr class="separator:acc8cb18a8b901b8321ab9d86491e41a3"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ab9eed39e40b8d7c16381fbccf84467cd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#ab9eed39e40b8d7c16381fbccf84467cd">onebyfftLen</a></td></tr> +<tr class="separator:ab9eed39e40b8d7c16381fbccf84467cd"><td class="memSeparator" colspan="2"> </td></tr> +</table> +<a name="details" id="details"></a><h2 class="groupheader">Description</h2> +<div class="textblock"><dl><dt><b>Examples: </b></dt><dd><a class="el" href="arm_convolution_example_f32_8c-example.html#_a13">arm_convolution_example_f32.c</a>.</dd> +</dl></div><h2 class="groupheader">Field Documentation</h2> +<a class="anchor" id="ac10927a1620195a88649ce63dab66120"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint8_t arm_cfft_radix4_instance_f32::bitReverseFlag</td> + </tr> + </table> +</div><div class="memdoc"> +<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, and <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="acc8cb18a8b901b8321ab9d86491e41a3"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix4_instance_f32::bitRevFactor</td> + </tr> + </table> +</div><div class="memdoc"> +<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="a7e6a6d290ce158ce9a15a45e364b021a"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix4_instance_f32::fftLen</td> + </tr> + </table> +</div><div class="memdoc"> +<p>length of the FFT. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="a25d1da64dd6487c291f04d226f9acc66"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint8_t arm_cfft_radix4_instance_f32::ifftFlag</td> + </tr> + </table> +</div><div class="memdoc"> +<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, and <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="ab9eed39e40b8d7c16381fbccf84467cd"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> arm_cfft_radix4_instance_f32::onebyfftLen</td> + </tr> + </table> +</div><div class="memdoc"> +<p>value of 1/fftLen. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="a8da0d2ca69749fde8cbb95caeac6fe6a"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t* arm_cfft_radix4_instance_f32::pBitRevTable</td> + </tr> + </table> +</div><div class="memdoc"> +<p>points to the bit reversal table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="a14860c7544911702ca1fa0bf78204ef3"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>* arm_cfft_radix4_instance_f32::pTwiddle</td> + </tr> + </table> +</div><div class="memdoc"> +<p>points to the Twiddle factor table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="abe31ea2157dfa233e389cdfd3b9993ee"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">uint16_t arm_cfft_radix4_instance_f32::twidCoefModifier</td> + </tr> + </table> +</div><div class="memdoc"> +<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p> + +</div> +</div> +</div><!-- contents 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